Concrete anchor



Dec. 18, 1928.

W. E. BILHORN CONCRETE ANCHOR Filed Aug. 28, 1925 Y d I Il Patented Dec.18, 1928.

UNITED STATES PATENT OFFICE.

WALTER E. BILHOR, OF ST. LOUIS, MISSOURI, ASSIGNOR TO BILHORN CONSTRUC-TIPN COMPANY, OF ST. LOUIS, MISSOURI. A CORPORATION OF MISSOURI.

CONCRETE ANCHOR.

Application med August 28, 1925. Serial No. 52,977.

My invention relates to concrete anchors or piles and has for itsprincipal object an anchor that is easily positioned, that is capable ofpenetrating hard materials and sinking to a great depth in the earth andthat is economical to manufacture. The anchor is ticularly adapted to beembedded in the eds of rivers and to have channel-obstructing devicesand the like secured thereto. The invention consists inthe anchor andmethod of sinking same and in the parts and combinations of partshereinafter described and claimed. l

In the accompanying drawing, which forms part of this specification,

Fig. 1 is a longitudinal sectional view of an anchor embodying myinvention;

Fig. 2 is an elevation;

Fig. 3 is a bottom view of the anchor cap;

2o and f Fig. 4 is a detail view of the clamp used to secure the anchorcap to cables projecting from said anchor.

So called self-driving piles or anchors are frequently used vin riverprotection work,

Asuch anchors having alongitudinal central bore through which a streamof water may be forced to wash away the earth ahead of the anchor andpermit it to sink into position. In the drawing is illustrated such ananchor 1, preferably of reinforced concrete, having a central bore 2,which bore may be provided with any suitable lining 3. Pivotally securedto bosses 4 projecting from said an chor are flukes 5 that have inwardlybent upper end portions 6 that rest in recesses 7 provided therefor inthe upper end of the anchor. Secured to said ukes 5 and to the anchor 1as by being embedded therein are ropes or cables 8 which when the anchoris in position to be driven, rest in recesses 9 in the sides thereof.After the anchor 1 has been driven, the flukes 5 are adapted to swingoutwardly and downwardly to the extent permitted by said ropes 8, thuspreventing the withdrawal of the anchor.

To assist in driving the anchor 1 into position, a heavy cap 10 `orfollower is provided therefor. Said cap 10 has longitudi-v nal slots 11in which rest cables 12 that project from the top of the anchor. Saidcap 10 is provided with a central bore 13 in the lower end of which issecured a nozzle 14 that projects through the central bore 2 of theanchor 1, the lower end of the cap resting onthe top of the anchor. Aclamp 15 is provided" at the top of said cap for engaging the cables,thus holding the cap and anchor together.

Said clamp 15 comprises a tubular member mounted on a pipe 16 projectingform the upper end of said cap. Rigidly secured to said tubular member15.y are projecting arms 17. Pivotally secured to bosses 18 on saidtubular member are arms 19. Secured at its ends to said pivotal arms19`is a spring 20 that tends to pull said arms apart. The swingingarms19 and the fixed arms 17 are provided with notches 21 adapted to receivethe cable 12. The ends of said arms 17 andv 19 are provided with holes22 through which locking pins 23 may bepassed when each swinging arm 19has been forced against its fixed arm 17, to lock the arms together withthe cable 12 held therebetween.

The lower end. of the cap 10 has plates 24 secured thereto, said platesextending over the head of the anchor and engaging the ends of theflukes. The ends of said plates are spaced apart over the slots 11, topermit the cables 12 to pass into and out of the slots.

The method of sinking the anchor in a river bed is as follows: The cap10 is mounted on the anchor 1 with its nozzle 14. extending through theanchor and with the plates 24 covering the ends of the flukes 5 of theanchor. The anchor cables 12 fit in the slots 11 of the cap 10 and atthe top of the cap the cables are received between the arms of theclamps 15 and the locking pins 23 for said clamp arms are inserted inthe holes thereof. The anchor is then lowered until it rests on theriver bed and water under pressure is forced through the cap and anchor,washing away the earth at the bottom of the anchor. Thus the anchorgradually sinks into the earth. It may be advisable to raise the anchorslightly at times and permit it to drop into position. After the anchorhas been driven far enough into the earth (which will ordinarily bebelow the maximum depth of scour of the river) the lockingepins 23 ofthe clamp arms are withdrawn, thus freeing -the cap 10 from the cables12 of the anchor 1 and permitting the cap to be raised. The anchorcables are then secured to whatever device is desired to be held in theriver, as a mattress for the river bed, or a current retarding device tobe suspended in the river. The hole above the anchor is filled in.

The above described anchor is easily positioned and by reason of theheavy cap is able to penetrate hard materials. The flakes nsure that itwill remain in the earth and cannot be withdrawn. The method ofsinkingthe anchor by means of the cap obviates the necessity forhammering n the anchor and it avoids the waste of materials that wouldfollow from using larger anchors. Obvious- 1y, numerous changes may bemade without departing from the invention and I do not wish to belimited to the precise construction shown.

What I claim is:

1. In combination, an anchor having iukes pivotally secured thereto anda removable cap, said cap having members overlapping the ends of saidflakes. l

2. In combination, an anchor having cables extending therefrom, a cap,said cap being provided with slots for receiving said cables, and meansat the top of said cap for engaging said cables to hold said cap andanchor together, said means being disengageable fromsaid cables when theanchor is in position. l

3. In combination, an anchor having cables extending therefromLa cap,said cap being provided With slots for receivin said cables, a clamp atthe top of said cap or engaging said cables to hold said cap and anchortogether, and said clamp being disengageable to permit the cap to beremoved.

4. In combination a concrete anchor having flukes pivotally securedthereto, cables secured to said flukes and to said anchor, said anchorbeing recessed to accommodate said cables, the upper vend of said anchorbeing provided with recesses 4for the ends of said flukes, cablesextending upward from said anchor, a cap provided with slots forreceiving said cables, plates secured to the lower end of said cap andfitting over the end of said anchor and the ends of said lukes and aclamp at the top of said cap for holding said cables, said clamp beingdisengageable from said cables when the anchor is in position.

5. In combination a concrete'anchor having iukes pivotally securedthereto, cables secured to said flakes and to said anchor, said anchorbeing recessed to accommodate said cables, the upper end of said anchorbein provided with recesses for the ends of sai flukes, cables extendingu ward from said anchor, a cap provided wit slots for receiv-l ing saidcables, plates secured to the lower end of said cap and fitting over theend of said anchor and the ends 'of said ukes and a clamp at the to saidcables, sai clamp having spring pressed clampin jaws and removable pinsfor holding said Jaws closed.

6. In combination, a concrete anchor having flukes pivotally securedthereto, cables secured to said fiukes and to said anchor, said anchorhaving recesses to accommodate said cables, the upper ends of saidflukes being in- Wardly bent and said anchor being prov1ded withrecesses to accommodate said fluke ends, cables extendinr upward fromsaid anchor, a concrete cap or said anchor, said cap being provided withslots to receive said cables, plates secured to the lower end portion ofsaid cap and fitting over the end of said anchor and the ends of saidiiukes, said anchor and said cap being provided with longitudinal bores,the bore of saidanchor being provided with a lining, a nozzlethreaded-into the lower end of said cap and extending into the bore ofsaid anchor, terminating at the lower end of said anchor, a water supplypipe threaded into the upper end of said cap, and a clamp member mountedon said pi e, said clamp member havin jaws releasa. ly engaving saidanchor ca les.

igned at St. Louis, Missouri, this' 25th day of August, 1925.

WALTER E. BILI-IGRN.

of said/ cap for holding

